I upload a updated Add Traits in Regular Menu mod. You can download it if you want.
So all you need to is to download one version of More Traits Mod and the Add Traits in Regular Menu mod. In case any confusion.

Since Embyr311 has not been updated their original mod for the toddler patch for a while and the original mod makes toddlers' trait disappeared, I have decided to make updated versions of the mod.
----You can add/ remove Trait to Sim by cheats

You can use Embyr311's Add Traits In Regular Menu Mod which makes the Add/Remove Traits option available without using cheats. I highly recommend you to use my mod with it because it's so much easier to add/ remove traits with it. The link is down below :http://modthesims.info/d/537389

However, some people are afraid the old one might be broken. It still works for me. Anyway, I upload a updated version with minor edits here.

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This mod is compatible with custom traits like my Sarcastic Trait as you can see in the image.
And Traits from Reward Store, Hidden Traits,Traits from completing child and adult aspirations and Traits given by chosen aspiration are not counted as the additional CAS (personality) Traits if you are worried.
NPC sims generated will have the number of traits stated by the package.
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There are 15 options you can choose from.

Only put ONE package of More Traits Mod you want in your mod file. Remove Embyr311's original mod before you put the new one if you decided you use my versions or it will not work.

-Embyr311's original "Add More CAS Traits"mod
or any mod that modifies the same files listed below will likely conflict
S4_03B33DDF_00000000_A37570B802C829D0_traits.traits
S4_03B33DDF_00000000_5D0152209188C58B_sims.aging.aging_tuning
S4_E882D22F_00000000_00000000000035F9_picker_Trait_Add
S4_E882D22F_00000000_00000000000035FA_picker_Trait_Remove

Thanks for creating the original mod to Embyr311 again!

Additional Credits:
Embyr311, S4PE

Key: - File was updated after upload was posted

Filename - Tip: You can click the magnifying glass to see the archive contents

Add Traits In Regular Menu Mod.rar
| Description: So I updated some lines in this mod. The old one seems working for me other than toddler can&#039;t add traits themselves. You could this one to prevent bugs if you want.